This Achievement can be a little time consuming, but relatively simple. I have heard some rumors that you have to answer all 100 questions in 1 sitting, NOT TRUE, I turned on my game yesterday after not playing it for over a month and on my 2nd group I got the Achievement. Some pointers:

Get a second controller and play both at the same time, in a Long Game. Occasionally the 2nd place player will get the choice of 3 puzzle groups... if one of the above categories is present then choose it.

Sequentials + Strike a Match are easy puzzles to get right answers, but stink for points, you get multiple tries to guess the correct order and in Sequentials they fill in 3/4 of the dates before the time runs out.

Pictograms - With the second controller buzz in and sound out the 4 multiple choice answers. Once you have the answers you should be able to choose the correct one.

Anagrams - I hate this puzzle group, but usually there will be 1 uncommon letter among the multiple-choices which you will be able to guess the correct answer.

Getting this game soon. If its like LCA, and you can pause game, then go online to an anagram generator.

Actually, it *IS* true for some people that it has to be done in one sitting. For whatever reason the game fails to save any data across plays for me. For Art House Tour, I got 100 in one sitting & it unlocked, but had played 15+ games before that day, so must've had a good number of questions that should've previously counted but didn't. Same for the other "Answer 100 questions..." achievements.